Apparatus for shaping plastic material such as india-rubber, guttapercha, and the like.



M. M. DESSAU. A APPARATUS FOR SHAPING PLASTIC MATERIAL SUCH AS INDIA RUBBER, GUTTA PERCHA, AND THE LIKE.

APPLICATION FILED NOV.11, 1910.

Patented July 18, 1911.

. v 2 SHEBTS'SHBET 1.

M DESSAU. APPARATUS FOR SHAPING PLASTIC ERIAL S INDIA RUBBER, GUTTA PERGHA,

' AND THE LI APPLICATION FILED N UNITED STATES PATENT OFFICE. I

MORLAND MICHOLL DESSAU, OF LONDON, ENGLAND.

APPARATUS FOR SHAPING PLASTIC MATERIAL SUCH AS INDIA-RUBLlBEB, GUTTA- PEBGHA, AND THE LIKE.

, DESSAU, a citizen of the United States of America, residing at London, England, have invented Improvements in Apparatus for Shaping Plastic Material such as India- Rubber, Gutta-Percha, and the Like, of.

i a part sectional side elevation and Fig. 3

. therein. 'ing the plate 0? can, as heretofore, e sup- .a plan of the improved machine.

As there shown, a is the stationary table having a central step bearin for a spmdle b whereon is carried, throng a spider c, a

rotary plate a? having mold apertures e By means. of the said ste bearported just clear of the table a in order to reduce friction. Upon the table a is mounted a spider comprising two arms 7 arranged in alinement and at rlght angles to another pair of arms g; The arms f serve as a support for bearings h of a main driving shaft 2' and also as a guide for a pair of compressing plungers 7' which are adapted to be depressed against the opposing action of return springs by cams m. The arms 9 serve as guides for a pair of ejecting plungers 'n. which are'adapted to be forced downward through any corresponding. pair of the apertures e in the plate d and discharge openings a in the table a by a beam 0 against the opposing action of return springs 22. A 53am 9 on the driving shaft 2' is adapted to operate the beam 0 simultane ously with the operation of the plungersj by the cams m. The'rotary plate at is formed with an internally toothed circular ,rack r with which engages a spur gear 8 'upon the lower end of a spindle tLworking in a bearing uformed on the spider f g. The upper end of thespindle t is provided with a ratchet wheel 4) and with a loosely moving bellcrank lever having a pawl w,

' Specification of Letters Patent.

Application filed November 11, 1910. Serial No. 591,865.

Patented July'18, 1911.

tance at each revolution. The arrangement is such that material can be fed into the apertures e in the late 01 at two points to be compressed and discharged at other points, the ratchet mechanism for rotating t plate d being operative while the plun ers j 'n are in their u per position and stationary.

z is a wheeil by which the shaft '5 can be rotated from any suitable driving means.

What I claim is 1. A. machine for making rubber biscuits, comprising a rotary plate having a series of apertures therein, a stationary table beneath such plate having a plurality of discharge openings in the-path of the apertures 1n said p ate, a carrier mountedupon said table, a plurality of ejecting plungers guided by said carrier and arranged .to enter apertures in said plate and the discharge openings in said table, a cross member connected to and carrying said ejecting plungers, a plurality of compressing plungers guided by said carrier and adapted to compress plastic material in the apertures of the rotary plate against the table, springs arretnged to move said lungers into thelr inoperative positions, a. driving shaft, cams thereon for depressing said compressing plunger-s, a cam on said-shaft for de ressing car at the engaged by said spur gear, a driving shaft mounted upon the carrier and a cam thereon, a ratchet wheel upon the up er end of paw governed the vertical spindle and a by the cam for intermittently actuating the ratchet wheel.

3; In a machine for. making rubber biscuits, a stationary table, a perforated rotary plate movable thereover, .a four--armed having a pawl engaging the ratchet wheel and cams'upon the driving shaft arranged to respectively operate the compressing 15 plungers, the beam of the ejecting plungers and the pawl operating lever.

Signed at London England this 17th day of October 1910.

MORLAND MICI-IOLL DESSAU.

Witnesses HUGH Hnmms, CHARLES Cors. 

